from a similar post about a valentini puffer (on 1st forum page atm):
I have a similar puffer... he's curious about anything that moves, and will nip at things.
He'd prolly be ok short term, but you'd lose something(s) to him over time for sure.
For instance, I added my blue spot puffer (very similiar to the one in question) to a 90g tank populated by LR
and a bunch of seagrasses, macros and a purple sea whip.
He's done fine with the shoal and turtle grass, but he mowed down a whole clump of manatee grass, one strand at a time - almost like he just liked chomping on it (prolly more to help his beak?).
I've seen him bite clumps off the sea whip as well.
He's had a couple of the smaller snails for dinner, but doesn't bother my massive mexican turbos. Couple hermits have ended up mysteriously gone too (hmmm).
The larger emerald crabs I have seem to be untouched as well.
I feed him a crawfish a week, and he basically tortures them to death by ripping off the legs..even when the crawfish is the same size or bigger..
Each animal has it's own personality.. just be prepared for a little destruction (which I don't mind too much, it is a semi-aggressive tank anyhow).